Probably not in the next few months, but vendors will probably have products out in 2008.

I know the /. crowd is primarily concerned with video performance, but there is a lot more to PCIe than just video. The new speeds will probably be more benificial for switch to switch PCIe connections.

There is a lot of cool stuff going on in the PCI-SIG, the SR and MR (single root and multi root) specifications for I/O virtualization are especially cool. SR allows an endpoint (PCIe device) to export virtual functions to a host running a hypervisor. So for example, this means that Xen could use SR to provide physical access to a fibre channel HBA to each guest and the guest would load the native driver for the HBA.

MR is really cool too - it allows multiple hosts to share the same PCIe device. So think of a blade chassis where you have PCIe slots in the back, all the blades could share a single 10Gbps NIC or HBA or whatever. This also has the added advantage of separating the I/O from the blade (currently any expansion devices have to go directly on the blade).

A small blurb on SR and MR can be found here:

http://www.pcisig.com/specifications/iov/

http://www.techworld.com/opsys/features/index.cfm? featureid=2728&pagtype=samecatsamechan